import java.util.Scanner;
import java.util.concurrent.ForkJoinPool;

public class Guess {
    public static void main(String[] args) {
        String[][] name=new String[4][];
        String[] name1= {"张", "李", "刘", "许", "钱"};
        String[] name2= {"王", "李", "于", "许", "孙"};
        String[] name3= {"赵", "刘", "于", "许"};
        String[] name4={"金", "钱", "孙"};
        name[0]=name1;
        name[1]=name2;
        name[2]=name3;
        name[3]=name4;
        for (int i = 0; i <4 ; i++) {
            System.out.printf((i+1)+":");
            for (int j = 0; j < name[i].length; j++) {
                System.out.printf(name[i][j]);
            }
            System.out.println();
        }
        





    }
}


